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Almost all point clouds denoising methods contain various parameters, which need to be set carefully to acquire desired results. In this paper, we introduce an evolutionary optimization algorithm based framework to obtain the parameter configuration of point clouds denoising methods automatically. New no-reference quality assessment metrics are proposed as objective functions to quantitatively evaluate the point clouds during the optimization process. The proposed metrics infer the quality of point clouds in terms of both smoothness and density. The ideas of manifold dimension and holes detection are combined to get the smoothness evaluation results. Simplified local outlier factor is further exploited for the density evaluation. Using public dataset and real-world scanned data, experimental results prove that the automatic tuning parameters provide a significant boost in performance compared with the manual tuning parameters. Furthermore, the results acquired by the proposed metrics achieve better or equivalent performance than the state-of-the-art metrics. • We promote the development of automatic parameter optimization in point clouds denoising field. • We propose new no-reference quality assessment metrics for noisy point clouds. [ABSTRACT FROM AUTHOR]

Data association is a crucial component of multiple target tracking, in which each measurement obtained by the sensor can be determined whether it belongs to the target. However, many methods reported in the literature may not be able to ensure the accuracy and low computational complexity during the association process, especially in the presence of dense clutters. In this paper, a novel data association method based on reinforcement learning (RL), i.e., the so-called RL-JPDA method, has been proposed for solving the aforementioned problem. In the presented method, the RL is leveraged to acquire available information of measurements. In addition, the motion characteristics of the targets are utilized to ensure the accuracy of the association results. Experiments are performed to compare the proposed method with the global nearest neighbor data association method, the joint probabilistic data association method, the fuzzy optimal membership data association method and the intuitionistic fuzzy joint probabilistic data association method. The results show that the proposed method yields a shorter execution time compared to other methods. Furthermore, it can obtain an effective and feasible estimation in the environment with dense clutters. [ABSTRACT FROM AUTHOR]